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DanishAbdullah

DanishAbdullah

Member Since 02 Jun 2012
Offline Last Active Nov 07 2013 08:49 PM
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Posts I've Made

In Topic: [Guide] Dell XPS 15 L502X (Early 2011) Snow Leopard Install (possibly L702x too)

21 February 2013 - 11:17 AM

Hey guys,

Been looking into this thread since probably it's early days (but never really actively participated as I have not much to offer).. Off and on... I have nothing but a great deal of gratitude for all the collaboration done here and elsewhere by enthusiasts and developers. But mainly people in this thread have been tremendously nice, helpful and informative, DoiX, wen1, jkbuha, TimeWalker, ben et al. Thank you.

Now to the part that I haven't found any pointers for.

I am on L502x GT540M machine with iATKOS ML2 and DoiX's ML optimizations installed. While GFX glitches are there, they are not that common. But the GUI hangs a lot with system log showing messages like:


Feb 21 11:58:27 Macintosh kernel[0]: stampWait: Overflowed checking for stamp 0x97d25 on MAIN ring: called from
Feb 21 11:58:27 Macintosh kernel[0]: timestamp = 0x97d23
Feb 21 11:58:27 Macintosh kernel[0]: **** Debug info for *possible* hang in MAIN graphics engine ****
Feb 21 11:58:27 Macintosh kernel[0]: ring head = 0x5a00fa10, wrap count = 720
Feb 21 11:58:27 Macintosh kernel[0]: ring tail = 0x0000ff50
Feb 21 11:58:27 Macintosh kernel[0]: ring control = 0x0000f801 enabled, auto report disabled, waiting, semaphore not waiting, length = 0x010 4KB pages
Feb 21 11:58:27 Macintosh kernel[0]: timestamps = 0x97d23
Feb 21 11:58:27 Macintosh kernel[0]: Semaphore register values:
Feb 21 11:58:27 Macintosh kernel[0]: VRSYNC: (0x12044) = 0x97d23
Feb 21 11:58:27 Macintosh kernel[0]: BRSYNC: (0x22040) = 0x0
Feb 21 11:58:27 Macintosh kernel[0]: RVSYNC: (0x 2040) = 0x0
Feb 21 11:58:27 Macintosh kernel[0]: BVSYNC: (0x22044) = 0x0
Feb 21 11:58:27 Macintosh kernel[0]: RBSYNC: (0x 2044) = 0x1
Feb 21 11:58:27 Macintosh kernel[0]: VBSYNC: (0x12040) = 0x0
Feb 21 11:58:27 Macintosh kernel[0]: Looks like MAIN ring is stuck waiting on an event
Feb 21 11:58:27 Macintosh kernel[0]: After attempt to clear wait condition = 0x0000f001 no longer waiting

I have scanned around on the internet quite a bit but there seems to be no clear answer/explanation of the phenomenon. Apparently some Macs also experienced similar errors when upgraded to 10.8.0 and some hackintoshes solved this problem by Switchresx custom resolutions with higher display clock speeds (a result that I have not really been able to replicate)...
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